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    Question

    A boat covers 540 km upstream and downstream in 't'

    time. If the speed of the stream is 8 km/h and the speed of the boat is 10 km/h then find the value of 't'.
    A 270h Correct Answer Incorrect Answer
    B 180h Correct Answer Incorrect Answer
    C 300h Correct Answer Incorrect Answer
    D 125h Correct Answer Incorrect Answer

    Solution

    Let the speed of boat in still water =B and speed of stream =S then B=10km/h and S= 8km/h So now Speed of Boat in upstream = B-S=2km/h Speed of Boat in Downstream =B+S=18km/h ATQ- t=540/18+540/2 =30+270 =300hours.

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